What’s Vulnerable › Vulnerabilities

CVE-2026-45247: Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-06-03
• EPSS: 26.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-26 · updated 2026-07-24
• Weakness: CWE-502

Description

Mirasvit Full Page Cache Warmer for Magento 2 before version 1.11.12 contains a PHP object injection vulnerability that allows unauthenticated attackers to achieve remote code execution by supplying a crafted serialized PHP object in the CacheWarmer cookie. Attackers can exploit the unrestricted call to PHP's native unserialize() function combined with gadget chains available in Magento and its dependencies to execute arbitrary code on the server.

Affected products

• Mirasvit Full Page Cache Warmer for Magento 2: before 1.11.12 — fixed in 1.11.12

How to fix

Upgrade to a fixed version: Mirasvit Full Page Cache Warmer for Magento 2 1.11.12. Check the vendor advisory for mitigations.

References

• https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer
• https://sansec.io/research/mirasvit-cache-warmer-object-injection
• https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magento-php-object-injection
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45247
• https://www.imperva.com/blog/imperva-customers-protected-against-cve-2026-45247-in-mirasvit-full-page-cache-warmer-for-magento/

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